The Democratic-controlled state Senate voted unanimously in favor of the override late Wednesday. The House voted 121-11 to override last week.

Under the bill, the state will partially finance pipeline construction in southern New England so more natural gas can get into the regional electric grid.

It will also boost funding for energy-efficiency efforts and provide financial assistance to help low-income families switch to more affordable heating systems.

LePage objected to parts of the bill, like allowing the Maine Public Utilities Commission rather than lawmakers to set the systems benefit charge that's added to nearly all electric bills to fund conservation and efficiency programs.